Power line connection
246
6.
POWER LINE CONNECTION
Types of mains
242
DDS
HARDWARE
Ref.1310
6.7 Types of mains
Depending on the diagram of the electric energy distribution circuit, there
are three types of mains: TN, TT and IT.
Depending on the type of mains, the cabling in the electrical cabinet will
vary considerably.
We here describe the characteristics and, later on, sample diagrams for a
proper installation.
Note that the diagrams provided here do not show the main contac-
tor
- KM1 that must be connected between the transformer or auto-
transformer and the DDS servo drive system.
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